Perhaps you should try some spelling variations:
thuat lanh » thuat san
thuat lap » thuat xay, thuat bai, thuat bao
phap duy » phap day, pham duy, phan duy
chu nang » chuc nang, chua nang, cuu nang
vu nang » vuc nang, va nang, vu dang
va phap » va phat, ban phap
va hanh » van hanh, va thanh, va danh
duy va » duy vat, duy van, day va
vi cua » vai cua, di cua
cua te » cua tu

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((thuat lanh) OR (thuat lap)) ((vu nang) or (chu nang)) xa hoi. lieu va phap duy va hanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thuat lanh) OR (thuat lap)) ((vu nang) OR (chu nang)) xa hoi. lieu va phap duy va hanh vi cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thuat lanh) OR (thuat lap)) ((vu nang) or (chu nang)) xa hoi. lieu va phap duy va hanh vi cua te".
• Adding a wildcard symbol may retrieve word variants: ((thuat lanh) OR (thuat lap)) ((vu nang) or (chu nang)) xa hoi. lieu va phap duy va hanh vi cua te*.